There is an object with mass m = 1kg hanging on the spring. Under the following conditions, what is the indication of the spring scale? (g = 10m / S ^ 2) (1) The velocity is 5 m / s (2) At the acceleration of a = 5m / S ^ 2, the vertical acceleration rises (3) The acceleration of a = 5 m / S ^ 2 is used to accelerate the descent (4) The acceleration of gravity g is used to decelerate and rise vertically

There is an object with mass m = 1kg hanging on the spring. Under the following conditions, what is the indication of the spring scale? (g = 10m / S ^ 2) (1) The velocity is 5 m / s (2) At the acceleration of a = 5m / S ^ 2, the vertical acceleration rises (3) The acceleration of a = 5 m / S ^ 2 is used to accelerate the descent (4) The acceleration of gravity g is used to decelerate and rise vertically

(1) If f-mg = 0, then f = mg = 10N
(2) When f-mg = ma, f = Mg + Ma = 15N
(3) When Mg-F = ma, f = mg Ma = 5N
(4) If a = g slows down, Mg-F = ma, then f = 0